Question

Mention the conditions to maximize the yield of H₂SO₄ by contact process.

Answer 1

The given steps for the production of sulphuric acid by contact process: 

1. To form SO₂, Burning the ores. 

2. Conversion of SO₂ to SO₃ by the reaction of the former with O₂ (V₂O₅ is used in this process as a catalyst.) 

3. Absorption of SO₃ in H₂SO₄ to give oleum (H₂S₂O₇).